Hi everyone,in my F-type R 550hp RWD, I'm listening a rear noise when full throttle, I perceive it from under the seat, its only when I go full throttle, not when i go normal or at low speed. recently i changed the gearbox and rear differential oil on Jaguar a few months ago.

 

If you can be a bit more specific on "noise", maybe someone could help. Clunk, creak, screech, whine, etc?

 

That rear noise that only occurs in full throttle - it’s called the POLICE

 

I have the car only a month, making slow and normal driving, even revving the car without fully depressing the pedal I don't hear any unusual noise, but when i fully depress the pedal and make a strong acceleration, I hear like a strong vibration right under the driver seat, I do not know if it is something normal in this model

 

JAJAJAJAJAJAJAJAJ Maybe... 🤣

 

How many miles? Could it be engne mounts? We've had a couple of members on here that have had failures in that area.

 

70.000 milles, i change recently the oil of the gearbox and the differential, the strange thing is that it only happens when I do a hard acceleration or I step on the gas pedal fully, the rest of the time in normal driving the gearbox is completely smooth and the car works fine.

 

You could try revving the engine with the hood open and engine cover removed to check for excessive engine movement - simple check to eliminate that.

 

Im going to try that, but the vibration comes more from the rear-central part of the vehicle.

 

I had strange clunk noise under hard acceleration on my '15 R. Turns out it was a failed engine mount. The noise went away after replacement of the engine mount.

 

Could be failing universal joint on the drive shaft--especially when on hard launches/wide open throttle.

 

Are you sure they used the proper fluids?

 

I changed the differential oil in Jaguar. I'm also not sure that the problem is the rear differential... the strange thing is that the vibration only occurs when accelerating to full

 

Diagnostic machine error codes

 

No idea what that says (I only speak English, and Italian and French curse words ).

Since you just changed the fluids, I am going to suggest something is out of line, or loose. When you or whomever did it, you may have not re-fastened something properly. Assuming it was not there before you did the work?

I would try that first, before assuming you have bigger problems. Check for loose fasteners, heat shields and plates.

DC

 

The noise was already there before changing the gearbox oil..

 

I had my diff refurbished (not sure exactly what Jaguar fixed under warranty, listen about bearings, etc but they didn't specify), at beginning also felt some vibration under seat and on back, i assumed was Winter tyres but then a whining started a low speeds. I also asked for all fluids changed (flushed) on gearbox. Is perfect now.


Also, they fixed exhaust piping rubbing on subframe, and it vibrates quite, check that (by your description looks exactly that).

 

Hi bro! the strange thing is that I only feel that vibration when I perform strong accelerations, the rest of the time the car is docile and quiet and gear changes are smooth even at high speed I do not perceive that vibration, only when i make strong accelerations...
The car have changed the oil of gearbox and differential months ago.

 

Try go under the car and check if the exhaust pipe (my case was the left one) is not too near any reinforcement or chassi, use a crowbar (gently ) to verify.

 

​​​​​​Thanks bro! I'm going to check it